Welcome to the Cassidy Clan Web Site, for all Cassidys, any variations of Cassidy, including O'Cassidyand O'Caiside,and their descendants, and for all persons with an interest in genealogy and Irish
Winner of the 4 Shamrock award from Doras, the world's most comprehensive directory of Irish and Irish-related websites. Read the Doras review of this site. The O'Brien Knot This Website was forme
Contains a database of 22,000 births, deaths and marriages for the surname O'BRIAN, O'BRIEN, O'BRYAN, BREEN, BYRNE, BRIAN, BRIEN and other Variants of the surname O'BRIEN.
Official home page for O'Dea, O'Day, Dee or Dea. Get your genealogy questions answered, receive twice yearly newsletters and attend clan gatherings at the O'Dea castle in Ireland!
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